Types of Contrails

PAGE CONTENTS

Don’t forget my other pages, links and comments are one click away at the top right of the page…

GROUND LEVEL

(TROPOSPHERIC)“ectoplasm and wave vortex”

This aircraft is on approach in humid stormy conditions. Its wheels are down and its flaps are set at fifteen degrees. A temporary “cloud” is visible over the flapped part of the wing indicating the strong pressure reduction caused by the extended flaps, and flowing back from the outermost flap edges is a pair of very strong vortices (“ectoplasm”!) thrown into sharp relief by the clouds of water droplets condensed by the severe reduction in air pressure at their centres. The vortices rise and fall with pressure fluctuations, generated in part by ambient conditions, and also changes in aircraft attitude. Some distance behind the aircraft its wave vortex is remarkably apparent. This is the “mixing engine” that causes contrails to fill supersaturated stratospheric layers.

Why are vortices so stable? Because they spin. Their rotational energy is high, and they can only be brought to a stop by viscous friction between them and the surrounding atmosphere.

The pillar of a tornado is a natural vortex, and is also typically so energetic that water vapor condenses into a “mist” (of water droplets) in the core of its vortex from what one might call the “centrifugal pressure drop” – but one shouldn’t – because the real reason for this condensation is the drop in temperature which occurs as a consequence of this drop in pressure.

THE EARLIEST PHOTO

OF PERSISTENT CONTRAILS (a.k.a. “chemtrails”)

The left-hand side of the picture was probably taken towards the end of August 1940, when the first high-altitude gun battles were being fought between the RAF and the Luftwaffe. The participants were Hawker Hurricanes and Me 109s, which were both fitted with superchargers which enabled them to manoever and fight at around 27,000 ft. The photo is taken over St. Paul’s Cathedral, London. Apologies for the poor state of the picture, but who knows how many times this picture has been copied…

There is a barrack-room lawyer who has claimed the above picture to be fake. If so, then so is this:

Seeing that I am still being spammed by this guy and others, I’m forced to point out the obvious…

These are NOT identical pictures, they ARE of St. Paul’s Cathedral, they are obviously fighter battles, and just as obviously NOT anti-aircraft fire, they AREN’T obscured by much bomb smoke because fighter battles tend to PRECEDE major bombing, as the bombers wouldn’t be able to survive fighter attacks. The defending fighters would have had to be “cleared” first, which is what happened.

As they AREN’T identical, (and yet one can see elements common to both) these pictures VALIDATE EACH OTHER. (I’m not sure that a NASA site would use “made up” material. Why would they need to, in this instance?) They are, of course, NOT the only pictures available for validation either…

The right-hand side of the first picture is a more contemporary copy of St. Paul’s for comparison.

And here is another picture of St. Paul’s, taken somewhat later in the war, where Allied bombers are circling to assemble prior to setting out to attack Germany. In this case one may discern further familiar contrail features such as ice agglomeration, falling, and shear.

WAVE VORTEX (1)

This was originally titled “Cessna Downwash” but a better name for it is “aircraft and its wave vortex climbing through clouds”. The powerful vortex generated by the pressure difference (inflight) between the topside and underside of aircraft wings is responsible for the lift which keeps the aircraft aloft and also the drag which demands the power input from its engines. The wave vortex of a jumbo jet has been known to cause light aircraft to crash five minutes AFTER the jumbo has passed. It causes “distrails” (negative contrails – ice crystal trail agglomeration and descent) and much furore in the “chemtrail community” where it is thought to be some new and misunderstood aspect of “spraying”. In reality it is the “mixing engine” which causes contrails to fill stratospheric layers with ice, and as a consequence, turn blue skies to white skies. (The”chemtrail” community immediately starts coughing!)

Let me quote you one of our “heroes” who calls himself skywitness because he believes himself to be a lone watcher of the skies on the side of the brave and true. (But on the other hand he blocked me immediately from his channel and then pursued me avidly through other channels’ comment boxes, claiming his contrail videos were irrefutable proof of “chemtrail spraying”). He asks:

“I would like to know if anyone has seen a rip in the clouds as it was taking place. Was it something that flew through the cloud, or did it just start to appear out of nowhere? I have seen more than a few of these type of rips or trails, but I have never seen how it takes place…”

All I’m asking is that anyone that knows him and reads this, could you get back to him and put him out of his misery?

WAVE VORTEX (2)

The USAF transport plane has just released its “decoy” flares into what would have been its invisible wave vortex. Chemtrailers in particular have to realise that this twin vortex extends backwards (and keeps rotating!) for at least fifty miles behind the airplane, and also, whether it is visible or not, it is always there.

These flares, by-the-way, are making the only definite “chemtrails” that can be proven to exist. Wherever this smoke falls, it will provide a few plants with a little extra fertilizer…

….Aaaaah. And of course I completely forgot these:

PROPELLER VORTICES

These have also been fervently denied by the relentlessly science-blind as “figments of a feverish imagination”.

5 Responses

Thanks for all the info on one page! Wonderful to see some reason on the subject.

A similar effect happens in water, only in reverse. As a propeller turns through the water it produces a great pressure difference at its tips and trailing edges which creates an effect called cavitation as air is violently released within the propeller’s vortex. This cavitation actually increases corrosion to the propeller’s surface and edges. Submarine technology works at reducing cavitation because it also produces detectable and identifiable sound in the water.

Thanks, Robert. In the case of underwater propeller cavitation, it isn’t air, but a temporary vacuum that is created, which on collapsing creates a sound shock which can etch the metal of the propeller. This is a high-power phenomenon which you’re not going to find taking place with a 2hp put-put outboard motor, but is of major concern with racing boats and other high-power craft.

It’s not just a vacuum either, it’s (at one point) a low pressure bubble of water vapor.

When a volume of liquid is subjected to a sufficiently low pressure, it may rupture and form a cavity. […] Vapor gases evaporate into the cavity from the surrounding medium; thus, the cavity is not a perfect vacuum, but has a relatively low gas pressure. Such a low-pressure cavitation bubble in a liquid begins to collapse due to the higher pressure of the surrounding medium. As the bubble collapses, the pressure and temperature of the vapor within increases. The bubble eventually collapses to a minute fraction of its original size, at which point the gas within dissipates into the surrounding liquid via a rather violent mechanism, which releases a significant amount of energy in the form of an acoustic shock wave and as visible light. At the point of total collapse, the temperature of the vapor within the bubble may be several thousand kelvin, and the pressure several hundred atmospheres.